CA2016630C - System for interrupting a transmitter output wave - Google Patents

System for interrupting a transmitter output wave

Info

Publication number
CA2016630C
CA2016630C CA002016630A CA2016630A CA2016630C CA 2016630 C CA2016630 C CA 2016630C CA 002016630 A CA002016630 A CA 002016630A CA 2016630 A CA2016630 A CA 2016630A CA 2016630 C CA2016630 C CA 2016630C
Authority
CA
Canada
Prior art keywords
modulator
mode operation
output signal
signal
phase
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CA002016630A
Other languages
English (en)
French (fr)
Other versions
CA2016630A1 (en
Inventor
Susumu Sasaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Publication of CA2016630A1 publication Critical patent/CA2016630A1/en
Application granted granted Critical
Publication of CA2016630C publication Critical patent/CA2016630C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/20—Modulator circuits; Transmitter circuits
    • H04L27/2032—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner
    • H04L27/2053—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases
    • H04L27/206—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers
    • H04L27/2067—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers with more than two phase states
    • H04L27/2071—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers with more than two phase states in which the data are represented by the carrier phase, e.g. systems with differential coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0008—Modulated-carrier systems arrangements for allowing a transmitter or receiver to use more than one type of modulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Transmitters (AREA)
CA002016630A 1989-05-12 1990-05-11 System for interrupting a transmitter output wave Expired - Fee Related CA2016630C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1117444A JPH07114420B2 (ja) 1989-05-12 1989-05-12 変調回路
JP1-117444 1989-05-12

Publications (2)

Publication Number Publication Date
CA2016630A1 CA2016630A1 (en) 1990-11-12
CA2016630C true CA2016630C (en) 1995-05-02

Family

ID=14711804

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002016630A Expired - Fee Related CA2016630C (en) 1989-05-12 1990-05-11 System for interrupting a transmitter output wave

Country Status (5)

Country Link
US (1) US5193222A (ja)
EP (1) EP0397077B1 (ja)
JP (1) JPH07114420B2 (ja)
CA (1) CA2016630C (ja)
DE (1) DE69030402T2 (ja)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5377229A (en) * 1990-12-19 1994-12-27 Motorola, Inc. Multi-modulation scheme compatible radio
SE468616B (sv) * 1991-06-12 1993-02-15 Ericsson Telefon Ab L M Foerfarande foer kompensering av saendarnyttosignalens beroende av oeverfoeringsfunktionen foer ett combinerfilter
GB2265269B (en) * 1992-03-02 1995-08-30 Motorola Ltd Radio transmitter with linearization training sequence
US5373532A (en) * 1992-09-11 1994-12-13 Fujitsu Limited π/4 quadrature phase shift keying modulator
US5995539A (en) 1993-03-17 1999-11-30 Miller; William J. Method and apparatus for signal transmission and reception
CA2120077A1 (en) * 1993-06-17 1994-12-18 Louis Labreche System and method for modulating a carrier frequency
US5490148A (en) * 1993-12-15 1996-02-06 Motorola, Inc. Bit error rate estimator
US5648985A (en) * 1994-11-30 1997-07-15 Rockwell Semiconductor Systems, Inc. Universal radio architecture for low-tier personal communication system
US5748679A (en) * 1995-04-28 1998-05-05 Trw Inc. Modulated clock MSK modulator for high data rate applications
JPH0993207A (ja) * 1995-09-26 1997-04-04 Canon Inc 信号処理装置
JP3024548B2 (ja) * 1996-04-26 2000-03-21 日本電気株式会社 位相変調方法および位相変調装置
AU6804298A (en) * 1997-05-29 1998-12-03 Alcatel A multi-modulation frame for a radio communication system
US5852636A (en) * 1997-08-08 1998-12-22 Serge Mathieu Method of and apparatus for modulation of FSK carrier in a very narrow band
JP3316744B2 (ja) * 1997-10-30 2002-08-19 三菱電機株式会社 Ａｆｃ回路、それを備えた受信機、及び自動周波数制御通信システム
JP3446816B2 (ja) * 1998-12-24 2003-09-16 沖電気工業株式会社 クロック情報を伴う信号伝送方法
JP3246471B2 (ja) 1999-03-31 2002-01-15 日本電気株式会社 マルチレート送信装置
US6968014B1 (en) 2000-02-23 2005-11-22 Xg Technology, Llc Missing cycle based carrier modulation
JP4448168B2 (ja) * 2004-03-04 2010-04-07 クゥアルコム・インコーポレイテッド 異なる変調フォーマットにおいて送信された隣接するシンボルバースト間でスムーズな遷移を達成するための方法および装置
WO2007030864A1 (en) * 2005-09-12 2007-03-22 Magellan Technology Pty Ltd A method and apparatus adapted to transmit data
JP2016188009A (ja) * 2015-03-30 2016-11-04 アルプス電気株式会社 キーレスエントリー装置
US9923646B1 (en) * 2017-06-29 2018-03-20 Yves Faroudja Combination low-pass filter

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4259742A (en) * 1978-11-06 1981-03-31 Burns Richard C Electronic switching system for reducing noise transients
US4644531A (en) * 1981-04-07 1987-02-17 Fujitsu Limited Time division communication system
JPS60242734A (ja) * 1984-05-17 1985-12-02 Nec Corp 送信機選択方法
JPS61128654A (ja) * 1984-11-27 1986-06-16 Nippon Telegr & Teleph Corp <Ntt> 切換装置
JPS63252050A (ja) * 1987-04-09 1988-10-19 Hitachi Ltd キヤリアオン・オフ方式

Also Published As

Publication number Publication date
CA2016630A1 (en) 1990-11-12
EP0397077A3 (en) 1993-03-03
US5193222A (en) 1993-03-09
JPH07114420B2 (ja) 1995-12-06
EP0397077B1 (en) 1997-04-09
JPH02298139A (ja) 1990-12-10
DE69030402D1 (de) 1997-05-15
EP0397077A2 (en) 1990-11-14
DE69030402T2 (de) 1997-08-14

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Legal Events

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